Does anybody else have trouble with being a host on G2

I set up a host situation, and my friends still don't seem
to be able to log on.

Any details setup pecuilarities that I might not know about??
I'm able to log on to some of the others, but my search engine doesn't seem
to work very well.

DO YOU NEED TO PUT A PORT NUMBER IN FOR IT TO WORK?

DO you always use the default no 6073?

Frank